Condensation heat transfer on superhydrophobic surfaces

Miljkovic, Nenad; Wang, Evelyn N.
May 2013
MRS Bulletin;May2013, Vol. 38 Issue 5, p397
Trade Publication
Condensation is a phase change phenomenon often encountered in nature, as well as used in industry for applications including power generation, thermal management, desalination, and environmental control. For the past eight decades, researchers have focused on creating surfaces allowing condensed droplets to be easily removed by gravity for enhanced heat transfer performance. Recent advancements in nanofabrication have enabled increased control of surface structuring for the development of superhydrophobic surfaces with even higher droplet mobility and, in some cases, coalescence-induced droplet jumping. Here, we provide a review of new insights gained to tailor superhydrophobic surfaces for enhanced condensation heat transfer considering the role of surface structure, nucleation density, droplet morphology, and droplet dynamics. Furthermore, we identify challenges and new opportunities to advance these surfaces for broad implementation in thermofluidic systems.


Related Articles

  • Dropwise condensation on superhydrophobic surfaces with two-tier roughness. Chen, Chuan-Hua; Cai, Qingjun; Tsai, Chialun; Chen, Chung-Lung; Xiong, Guangyong; Yu, Ying; Ren, Zhifeng // Applied Physics Letters;4/23/2007, Vol. 90 Issue 17, p173108 

    Dropwise condensation can enhance heat transfer by an order of magnitude compared to film condensation. Superhydrophobicity appears ideal to promote continued dropwise condensation which requires rapid removal of condensate drops; however, such promotion has not been reported on engineered...

  • Condensation heat transfer on two-tier superhydrophobic surfaces. Cheng, Jiangtao; Vandadi, Aref; Chen, Chung-Lung // Applied Physics Letters;9/24/2012, Vol. 101 Issue 13, p131909 

    We investigated water vapor condensation on a two-tier superhydrophobic surface in an environmental scanning electron microscope (ESEM) and in a customer-designed vapor chamber. We have observed continuous dropwise condensation (DWC) on the textured surface in ESEM. However, a film layer of...

  • Analysis of Wetting Characteristics on Microstructured Hydrophobic Surfaces for the Passive Containment Cooling System. Zhao, Wei; Zhang, Xiang; Tian, Chunlai; Gao, Zhan // Science & Technology of Nuclear Installations;6/11/2015, Vol. 2015, p1 

    As the heat transfer surface in the passive containment cooling system, the anticorrosion coating (AC) of steel containment vessel (CV) must meet the requirements on heat transfer performance. One of the wall surface ACs with simple structure, high mechanical strength, and well hydrophobic...

  • Puddle jumping: Spontaneous ejection of large liquid droplets from hydrophobic surfaces during drop tower tests. Attari, B.; Weislogel, M.; Wollman, A.; Chen, Y.; Snyder, T. // Physics of Fluids;2016, Vol. 28 Issue 10, p1 

    Large droplets and puddles jump spontaneously from sufficiently hydrophobic surfaces during routine drop tower tests. The simple low-cost passive mechanism can in turn be used as an experimental device to investigate dynamic droplet phenomena for drops up to 104 times larger than their normal...

  • The Depth Distribution of Seismicity at the Northern End of the Rwenzori Mountains: Implications for Heat Flow in the Western Branch of the East African Rift System in Uganda. Fred, Walusimbi; Moses, Kigongo; Vincent, Ngonzi; Francis, Mulumba // International Proceedings of Chemical, Biological & Environmenta;2012, Vol. 36, p85 

    Data from a six-month deployment of seismic stations around the northern end of the Rwenzori Mountains have been used to investigate the depth extent of seismicity and its implications for heat flow in the Western Branch of the East Africa Rift System in Uganda. Previous seismicity studies of...

  • Coalescence of pendant droplets on an inclined super-hydrophobic substrate. Sikarwar, Basant Singh; Khanderkar, Sameer; Muralidhar, K. // AIP Conference Proceedings;Jul2013, Vol. 1547 Issue 1, p505 

    Dynamics of micro droplets, coalescence underneath an inclined hydrophobic surface is explored, experimentally as well as computationally. Such a situation often arises during dropwise condensation, atmospheric dew formation, condensation in green houses, and metal vapor condensation during...

  • Do surfaces with mixed hydrophilic and hydrophobic areas enhance pool boiling? Betz, Amy Rachel; Xu, Jie; Qiu, Huihe; Attinger, Daniel // Applied Physics Letters;10/4/2010, Vol. 97 Issue 14, p141909 

    We demonstrate that smooth and flat surfaces combining hydrophilic and hydrophobic patterns improve pool boiling performance. Compared to a hydrophilic surface with 7° wetting angle, the measured critical heat flux and heat transfer coefficients of the enhanced surfaces are, up to...

  • Planar jumping-drop thermal diodes. Boreyko, Jonathan B.; Zhao, Yuejun; Chen, Chuan-Hua // Applied Physics Letters;12/5/2011, Vol. 99 Issue 23, p234105 

    Phase-change thermal diodes rectify heat transport much more effectively than solid-state ones, but are limited by either the gravitational orientation or one-dimensional configuration. Here, we report a planar phase-change diode scalable to large areas with an orientation-independent diodicity...

  • Wetting behaviour of different tube materials and its influence on scale formation in multiple-effect distillers. Stärk, Alexander; Loisel, Katell; Odiot, Karine; Feßenbecker, Achim; Kempter, Andreas; Nied, Stephan; Glade, Heike // Desalination & Water Treatment;Aug2015, Vol. 55 Issue 9, p2502 

    Multiple-effect distillation (MED) plants with horizontal tube falling film evaporators for sea water desalination exhibit relatively high heat transfer coefficients achieved by film flow under clean surface conditions. However, they are susceptible to heat transfer deterioration and scale...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics